Thank you for the info chickenstar. I did ask my vet about hormonal treatment, but we decided it wasn't the best fit for us.
Update on my hen! She is actually doing a little better. She hadn't laid an egg since the broken one five days ago. She laid an egg today, but the shell was soft and it broke in the nest. It didn' t get stuck though, and the good news is that it had a yolk! That is the first yolk since this whole mess started. Also, her belly is back to normal, no water balloon feel and pretty normal. Her comb is nice and red, and she is otherwise acting and eating normally. I have no idea what has been the improvement. Maybe she took a break from laying, and her body was able to absorb the yolk/fluid in her abdomen? I did dose her with liquid calcium again today after the soft shelled egg, she really hates that, and she had a booty bath b/c of sticky egg in her bum feathers. Obviously, she isn't all better, because we are having the shell problems still. Maybe she has a defect in her shell gland? I don't know, I am just glad she is feeling better for now. Hopefully, with winter coming, her laying will slow down enough that she can heal some. I know that the problem will most likely return, just hoping for the best.